| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.9 | 28.1 | 40.4 | 57.2 | 71.4 | 80.6 | 84.4 | 81.8 | 73.1 | 59.9 | 40.1 | 26.2 | 55.4 |
| Highest Mean Max. Temperature (F) | 37.5 | 42.7 | 52.7 | 68.8 | 80.9 | 89.5 | 91.2 | 89.9 | 82.7 | 66.3 | 54.5 | 36.4 | 91.2 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1988 | 1988 | 1975 | 1983 | 1998 | 1973 | 1999 | 1999 | 1975 |
| Lowest Mean Max. Temperature (F) | 9.6 | 16.7 | 30.7 | 45.5 | 64.5 | 74.1 | 75.0 | 75.5 | 66.6 | 55.4 | 28.6 | 8.7 | 8.7 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1996 | 1993 | 1992 | 1985 | 1985 | 1981 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 13.0 | 19.8 | 32.2 | 46.9 | 60.3 | 69.6 | 73.5 | 71.0 | 61.7 | 49.2 | 32.1 | 18.0 | 45.6 |
| Highest Mean Temperature (F) | 27.3 | 32.3 | 41.3 | 55.6 | 68.8 | 75.4 | 78.8 | 78.5 | 69.3 | 55.8 | 42.3 | 27.7 | 78.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1973 | 1999 | 1979 | 1983 |
| Lowest Mean Temperature (F) | 0.4 | 6.7 | 23.1 | 41.2 | 53.9 | 64.6 | 65.3 | 65.6 | 55.6 | 44.0 | 21.4 | 1.1 | 0.4 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1987 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 4.0 | 11.5 | 24.0 | 36.6 | 49.2 | 58.5 | 62.5 | 60.1 | 50.3 | 38.4 | 24.0 | 9.8 | 35.7 |
| Highest Mean Min. Temperature (F) | 17.0 | 24.1 | 35.2 | 45.0 | 57.4 | 62.8 | 69.0 | 67.1 | 57.3 | 45.2 | 31.0 | 20.8 | 69.0 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1983 | 1983 | 1978 | 1973 | 1983 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -8.8 | -3.4 | 15.5 | 31.0 | 41.5 | 54.1 | 55.6 | 54.5 | 44.2 | 32.1 | 14.2 | -6.5 | -8.8 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1996 | 1997 | 1985 | 1992 | 1992 | 1993 | 1987 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.70 | 0.61 | 1.65 | 2.51 | 3.11 | 4.09 | 3.80 | 3.61 | 2.48 | 1.88 | 1.60 | 0.60 | 26.64 |
| Highest Precipitation (in.) | 1.89 | 1.69 | 4.31 | 6.43 | 5.48 | 11.55 | 7.42 | 8.30 | 6.77 | 4.97 | 5.33 | 1.98 | 11.55 |
| Year Highest Occurred | 1975 | 1971 | 1977 | 1986 | 1979 | 1993 | 1990 | 1979 | 1986 | 1984 | 1983 | 1996 | 1993 |
| Lowest Precipitation (in.) | 0.06 | 0.02 | 0.26 | 0.32 | 0.48 | 0.37 | 0.27 | 1.07 | 0.45 | 0.04 | 0.00 | 0.03 | 0.00 |
| Year Lowest Occurred | 1995 | 1985 | 1994 | 1980 | 1975 | 1988 | 1988 | 1972 | 2000 | 1989 | 1984 | 1979 | 1984 |
| Heating Degree Days (F) | 1613. | 1265. | 1016. | 547. | 210. | 30. | 16. | 31. | 152. | 493. | 988. | 1458. | 7819. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 63. | 166. | 278. | 215. | 53. | 1. | 0. | 0. | 780. |